Density meter DS7400/DS7500 and DS7800/DS7900

Digital density meters with up to five decimal places for measuring density, relative density and concentration of aqueous solutions in a range of 0.00000 – 1.99999 g/cm³. For the devices DS7800 and DS7900, measuring method is based on established oscillating U-tube technology. The U-tube made of glass is monitored through the window to ensure that no gas bubble falsifies measurement results.

Within DS7800 and DS7900 devices, minute capillaries have replaced the once large flexural resonator tubes. An integrated micro-mechanical measuring module already delivers reliable measuring results for sample quantities of 80 µl.

The devices have a high-precision recirculation air-temperature control based on a Peltier element. Calibration is performed with pure water and dry air. A dry-air unit and a peristaltic pump for sample handling are included. The operation is intuitive and done by a user-friendly touch screen. All important settings are visible on the main screen and stored in an SQL data base together with measuring results. Data storage covers last 999 measurements. An activatable three-level user administration with password protection makes the DS7000 series particularly suitable for use in GLP/GMP regulated industries.